Ohm verses 75 Ohm Coaxial Connectors
what¡¦s the difference between 50 and 75 Ohm Coaxial Connectors?
difference can be found in the center pins and dialectric
insulators. 75-ohm coaxial connectors feature Teflon as
a dialectric, and surround the outer spring fingers with
air. Its center pin maintains a consistent diameter in both
the front and rear areas. 50-ohm connectors, on the other
hand, use Delrin to surround the spring fingers, and its
center pin is larger in the crimp area. It is important
to note that you will need a different crimp tool for each
type of center pin during installation.
Ohm and 75 Ohm have major differences in functionality.
Both connectors can mate with the coaxial cable however
you cannot mix and match 50 and 75 ohm. You will not have
the same video quality with 50 ohm which you have with 75
ohm. Therefore, if you installed a traditional 50-ohm connector
on a 75-ohm coaxial video cable, the digital signal would
be significantly distorted.
50-ohm coaxial connectors are used for older analog video
applications. But for higher performance A/V applications
like HDTVs you must use 75-ohm devices. 75-ohm coaxial connectors
can, however, be used for analog applications.
know if you have 75 ohm connectors and cable the center
pin must have the same diameter in the crimp area as the
mating area in order to have true 75-ohm impedance. If a
connector claims to be 75-ohm but doesn¡¦t have a consistent
pin length, it¡¦s an inferior product which is not of the